Principles of Inheritance and Variation

Class 12 · Biology · 15 Questions

1intermediate💡 Understand3 marksShort Answer

Mention the advantages of selecting pea plant for experiment by Mendel.

2intermediate💡 Understand3 marksShort Answer

Differentiate between the following –

3intermediate🔧 Apply2 marksShort Answer

A diploid organism is heterozygous for 4 loci, how many types of gametes can be produced?

4intermediate💡 Understand5 marksLong Answer

Explain the Law of Dominance using a monohybrid cross.

5intermediate🔧 Apply2 marksShort Answer

Define and design a test-cross.

6intermediate🔧 Apply3 marksShort Answer

Using a Punnett Square, workout the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus.

7advanced🔧 Apply3 marksShort Answer

When a cross in made between tall plant with yellow seeds (TtYy) and tall plant with green seed (Ttyy), what proportions of phenotype in the offspring could be expected to be

8advanced🔧 Apply2 marksShort Answer

Two heterozygous parents are crossed. If the two loci are linked what would be the distribution of phenotypic features in F1 generation for a dihybrid cross?

9beginner🧠 Remember2 marksShort Answer

Briefly mention the contribution of T.H. Morgan in genetics.

10beginner💡 Understand2 marksShort Answer

What is pedigree analysis? Suggest how such an analysis, can be useful.

11intermediate💡 Understand3 marksLong Answer

How is sex determined in human beings?

12advanced🔧 Apply3 marksShort Answer

A child has blood group O. If the father has blood group A and mother blood group B, work out the genotypes of the parents and the possible genotypes of the other offspring.

13intermediate💡 Understand3 marksShort Answer

Explain the following terms with example

14beginner🧠 Remember2 marksShort Answer

What is point mutation? Give one example.

15beginner🧠 Remember1 markVery Short

Who had proposed the chromosomal theory of the inheritance?